Mixed Method Summative-Formative Analysis

For complex interventions, formative evaluation designs, including multiple qualitative and quantitative methods, hold distinct advantages over single-method evaluations. However, their value lies not in quantity but in quality. i.e. the compatibility between techniques used and evaluation questions and the scientific integrity of method selection and contextualised implementation.

Multiple, mixed-method evaluations are used widely, particularly for programmes that involve complex interventions or a complex mix of interventions. This approach creates a holistic and detailed picture of the programme and its implementation while countering the inherent biases in single-method evaluations.

Furthermore, because this multi-pronged approach enables corroboration and triangulation of data, evaluators can concretely verify and validate findings. However, assembling a team with the necessary skills/experience and acquiring resources for data collection/analysis across multiple methods often proves challenging; and thus requires a well-thought-out team formulation and preparation plan.